2,4-Dioxo-3-azaspiro(5.5)undecane-1,5-dicarbonitrile 2-22-00-00288 (Beilstein Handbook Reference) 3,5-Dicyano-4,4-spirocyclohexaneglutarimide 3-AZASPIRO(5.5)UNDECANE-1,5-DICARBONITRILE, 2,4-DIOXO- 4355-15-1 BRN 0239873 EINECS 224-428-4 NSC 169442